Paste any URL and we'll detect which analytics tools are running — HitCounters, GA4, GTM, Plausible, Fathom, Statcounter, Matomo, Clarity, and a dozen more.
We fetch the page once, like a browser would, and scan the HTML for known analytics script signatures. We do not execute JavaScript, so:
The most reliable test is still: load your site in a private window, open DevTools → Network, and look for the analytics requests directly.